ABAP Select data from SAP table /SCWM/S_ASP_TO_CANCPICK into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/S_ASP_TO_CANCPICK table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to /SCWM/S_ASP_TO_CANCPICK. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the /SCWM/S_ASP_TO_CANCPICK table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_/SCWM/S_ASP_TO_CANCPICK TYPE STANDARD TABLE OF /SCWM/S_ASP_TO_CANCPICK,
      WA_/SCWM/S_ASP_TO_CANCPICK TYPE /SCWM/S_ASP_TO_CANCPICK,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: </SCWM/S_ASP_TO_CANCPICK> TYPE /SCWM/S_ASP_TO_CANCPICK.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SCWM/S_ASP_TO_CANCPICK.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/S_ASP_TO_CANCPICK
  INTO TABLE IT_/SCWM/S_ASP_TO_CANCPICK.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_ASP_TO_CANCPICK
*  INTO TABLE @DATA(IT_/SCWM/S_ASP_TO_CANCPICK2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_/SCWM/S_ASP_TO_CANCPICK INDEX 1 INTO DATA(WA_/SCWM/S_ASP_TO_CANCPICK2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/S_ASP_TO_CANCPICK ASSIGNING </SCWM/S_ASP_TO_CANCPICK>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_ASP_TO_CANCPICK>-DOCNO = 1.
</SCWM/S_ASP_TO_CANCPICK>-ITEMNO = 1.
</SCWM/S_ASP_TO_CANCPICK>-LGNUM = 1.
</SCWM/S_ASP_TO_CANCPICK>-TANUM = 1.
</SCWM/S_ASP_TO_CANCPICK>-VLTYP = 1.

ENDLOOP.

LOOP AT IT_/SCWM/S_ASP_TO_CANCPICK INTO WA_/SCWM/S_ASP_TO_CANCPICK.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_ASP_TO_CANCPICK-VLBER, sy-vline,
  WA_/SCWM/S_ASP_TO_CANCPICK-VLPLA, sy-vline,
  WA_/SCWM/S_ASP_TO_CANCPICK-NLTYP, sy-vline,
  WA_/SCWM/S_ASP_TO_CANCPICK-NLBER, sy-vline,
  WA_/SCWM/S_ASP_TO_CANCPICK-NLPLA, sy-vline,
  WA_/SCWM/S_ASP_TO_CANCPICK-VSOLM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_ASP_TO_CANCPICK you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_/SCWM/S_ASP_TO_CANCPICK TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_/SCWM/S_ASP_TO_CANCPICK INTO WA_/SCWM/S_ASP_TO_CANCPICK.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field DOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASP_TO_CANCPICK-DOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASP_TO_CANCPICK-DOCNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPH0, internal->external for field ITEMNO
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASP_TO_CANCPICK-ITEMNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASP_TO_CANCPICK-ITEMNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPH0, internal->external for field TANUM
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASP_TO_CANCPICK-TANUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASP_TO_CANCPICK-TANUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASP_TO_CANCPICK-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASP_TO_CANCPICK-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ALTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASP_TO_CANCPICK-ALTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASP_TO_CANCPICK-ALTME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STSP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASP_TO_CANCPICK-STSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASP_TO_CANCPICK-STSP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DTSP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASP_TO_CANCPICK-DTSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASP_TO_CANCPICK-DTSP.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/SCWM/S_ASP_TO_CANCPICK_STR, 
DOCNO TYPE STRING,
ITEMNO TYPE STRING,
LGNUM TYPE STRING,
TANUM TYPE STRING,
VLTYP TYPE STRING,
VLBER TYPE STRING,
VLPLA TYPE STRING,
NLTYP TYPE STRING,
NLBER TYPE STRING,
NLPLA TYPE STRING,
VSOLM TYPE STRING,
MEINS TYPE STRING,
VSOLA TYPE STRING,
ALTME TYPE STRING,
STATUS TYPE STRING,
SRSRC TYPE STRING,
DRSRC TYPE STRING,
STU_NUM TYPE STRING,
STSP TYPE STRING,
SSCAC TYPE STRING,
DTU_NUM TYPE STRING,
DTSP TYPE STRING,
DSCAC TYPE STRING,
DOCCAT TYPE STRING,
DOCID TYPE STRING,
ITEMID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_ASP_TO_CANCPICK_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_/SCWM/S_ASP_TO_CANCPICK_STR-DOCNO sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-ITEMNO sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-LGNUM sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-TANUM sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-VLTYP sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-VLBER sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-VLPLA sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-NLTYP sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-NLBER sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-NLPLA sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-VSOLM sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-MEINS sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-VSOLA sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-ALTME sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-STATUS sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-SRSRC sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-DRSRC sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-STU_NUM sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-STSP sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-SSCAC sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-DTU_NUM sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-DTSP sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-DSCAC sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-DOCCAT sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-DOCID sy-vline 
WA_/SCWM/S_ASP_TO_CANCPICK_STR-ITEMID sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.